What does code P0112 mean?

P0112 — Low input from Intake Air Temperature (IAT) sensor. ECM thinks air is already 120°C hot and dramatically leans out the mixture. Belongs to the powertrain.sensor system. Severity: warning.

What are the common causes of P0112?

Break in IAT signal wire; Wiring shorted to ground; Failed IAT sensor (common past 100K km); Corroded connector inside intake tract; Wiring damage in the engine bay

Can I drive with code P0112?

Limited: reaching the nearest workshop is fine, but avoid long trips. May progress into a more serious fault.

How do I diagnose P0112?

Read the code and freeze-frame with a scanner, check related-system errors, inspect the components listed (wiring, connectors, sensors). See the "How to diagnose" section above for the full step-by-step.

How do I clear code P0112?

The code can be cleared via an OBD-II scanner (e.g. ELM327 + the Car Diagnostics app): plug the adapter into the OBD port, go to Errors → Clear. If the underlying cause isn't fixed, the code will return within a few drive cycles.

OBD-II Code P0112 — Car Diagnostics Platform

What it means

Common causes

Break in IAT signal wire
Wiring shorted to ground
Failed IAT sensor (common past 100K km)
Corroded connector inside intake tract
Wiring damage in the engine bay
IAT integrated in MAF — replace the whole assembly

How to diagnose

01
Read all stored and pending codes with an OBD-II adapter — get the full picture, not just the one code.
02
Capture freeze-frame data (RPM, coolant temperature, engine load) at the exact moment the code triggered.
03
Inspect the named subsystem with our app's AI explanation — get vehicle-specific causes for your make, model and year.

Decode P0112 on your actual car

Plug in an OBD-II adapter and get an AI-powered diagnosis tailored to your vehicle make, model and year — in 30 seconds.

Try the demo